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tGPT translate Google Search X C Which of the statements bel X oads/att.epCqDCR-ol0GROgrwWy0F2UVDmra3oKTRAHPREHOKQ.pdf OKTRAHPREHOKQ.pdf 20/60 150%+ 15. Njehsoni pH e një tretësire 0,010 M CH3CO2H. Ka = 1,8 x 10-5 për acidin acetik. A) 9.26 B) 3.39 C) 2.02 D) 10.61 E) 4.74 Përgjigje: B 16. Njehsoni fortësinë jonike të një tretësire 0.210 M FeCl2. Përgjigja: 0.630

What volume in mL of 4.35 M HCI solution is needed to react with 18.5g of Ca(0H)2

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To analyze an aspirin sample, 0.3470 g of crushed tablets are weighed and treated with 50.00 mL 0.1155 M sodium hydroxide, boiling for 10 minutes. Under these conditions the acid acetylsalicylic (MW, 180) reacts according to: CH3COO-C6H4-COOH + 2 OH- → OH-C6H4-COO- + CH3COO- The excess NaOH is then titrated with 11.5 mL of 0.2100 M HCl. What is the purity of said show ?.

.t to tuasd ssem uL () the The moralify of the souhm The mnany of the sonunon हुर्गज् strongest Type f the IMf fornd in this soution to ·a t o tusad Ssem of mg coH)2 in 300.0g %801.da, at punot seu woynios (alculate. て of water. The oensiy of the finoal ha unthos

3.A sample is known to contain NaOH, Na2CO3 NaHCO3 or compatible mixture of these together with inert matter. With methyl orange, a 1.100 g sample requires 31.40 mL of HCl ( 1.00 mL is equivalent to 0.0140g CaO). With phenolphthalein indicator, the same weight of sample requires 13.30mL of the acid. What is the percent composition of the sample? ww ww

A solution is prepared in which [Pb2+]= 0.0150 M and [Br 0.00350 M. Given that PbBr2 has a Kgo = 2.1 x 106, which of the following is true? %3D Select one: O a. Qsp Kg. and the solution is supersaturated %3D O d. Q.,< Kgp and the solution is supersaturated

How to prepare 250cm3 of a solution of carbonate with concentration 0.100 mol dm-3

FSC 8 1921. Brightspace A Aktiv Chemistry C D Z < Q + # At F2 @ 2 What volume in mL of 0.3000 M NaCl solution is required to produce 0.2700 moles of NaCl? W S app.101edu.co Walmart - Hiring Ce... X F3 X # 3 11. Unit 12: Late Adulthood - Develo X E JC 4 D F4 с 144 $ JU F5 R LL F ► 11 % 5 V F6 t 44 T G A 6 F7 Simulation play - Labster B Y H F8 & 7 8 U N Question 7 of 9 DELL F9 X D * 8 J F10 ( M Walmart - Hiring Center 9 F11 JI K 2 O ) O F12 L P 4 : 7 +/- PrtScr W 8 Insert { ( **

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A solution was prepared by dissolving 1210 mg of K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 785 mL. Calculate b) the weight/volume percentage of K3Fe(CN)6, the number of millimoles of K+ in 35.0 mL of this solution, and the ppm of Fe(CN)63-

Will yall tell me the formula steps

The distribution constant for solute Z. between Water is 3.7. Calculate the remaining consentration of 2. remaining in a solution when 0.036 M and 31 ml. aparous solution of A is extracted with 4 portions of 8 ml. hexane AY 7.28 x 10M B ) 7.37 x 10M C) 148 x 10M D) 2.61 x 10M E ) 1.87 x 10M

Rich LTI e Post Attendee - Zoom M MyOpenMath - MAT 129 enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [References] Use the References to access important values if neede Match the following aqueous solutions with the appropriate letter from the column on the right. |1. 0.163 m Mn(CH;COO)2 A. Highest boiling point 2. 0.153 m Cul2 B. Second highest boiling point 3. 8.60×102 m Cr2(SO4)3 C. Third highest boiling point 4. 0.400 m Sucrose (nonelectrolyte) D. Lowest boiling point Submit Answer Try Another Version 2 item attempts remaining Visited

ersations Window Help То: EM Delive Which of the following statements best describes the solubility of Pbl2 in a solution containing NaNO3? Question 2 options: The solubility is higher :39 AM s best a sol... The solubility is lower 0:16 AM It has no effect 3:46 AM iMessage

How do I solve this?

b My Questi x Co. How to Ca X N NSU Login X PeriodicTa X M Action Re x 0 mySigTau XG 4.25 ml to X ( NBA FinalX G scientific X + enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator%3Dassignment-take [References] A 1:1 mixture by moles of nitrous oxide and oxygen is often used as a sedative in dentistry. If the total pressure of this mixture in a cylinder is 3.75 atm, what is the partial pressure of each gas? Partial pressure of nitrous oxide = atm Partial pressure of oxygen = atm Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Support

anobeaup oth Towne nodi bas moldorq gniwollot och bus odi steluols).(d) obnoldo (II)nos y 2 anisonou nohulos euooups Im-0,28 nA noituloa sil! to vislom Totuloa od to 228m orb ei tedW 2 Solution 1 2 3 4 Part 1 Data related to aqueous solutions of sodium chloride (NaCl) and aqueous solutions of ethanol (C₂H5OH) are provided in the table below. Use the table to answer the following questions. Circle the letter of the choice that best answers the question. NaCl 3.0 3.0 3.0 3.0 Mass (g) H₂O 100.0 200.0 300.0 400.0 Solution 5 6 7 8 Snoituloz odi to smlov o zi Wa 1. What is the percent by mass of NaCl in solution 1? a. 0.030% b. 2.9% Volume (mL) C₂H5OH 2.0 5.0 9.0 15.0 c. 3.0% H₂O 100.0 100.0 100.0 100.0 d. 33%

Ans. 17.15 mg. 54) A 1.000-g sample of a mixture which contains only NaCl and KCl gare a precipitate of AgCl which weighed 2.000 g. What are the percentages of Na and K in the mixture? ins 10 g Ans. 44.77% K; 5.75% Na. 1:J 55. I- can be sernarated from othor

i %VA + NI O 1:EV 1.docx > 1. A 15.67 g sample of a hydrate of magnesium carbonate, MGCO, was heated, without decomposing the carbonate, to drive off the water. The mass after heating sufficiently was reduced to 7.58 g. a) Find the percent of water. b) Find the moles of water. c) Find the moles of anhydrous salt. d) Calculate X = the number of water molecules in a hydrate sample (X H2O) and e) what is the formula of the hydrate? 2. A 1.235 g sample of unknown strontium chloride hydrate was found to have 0.511 g of water present. What is the percent of water in the hydrate? II >